Java object oriented programming (encapsulation / Inheritance / polymorphism) instance parsing

• Java

This paper mainly introduces the analysis of three object-oriented feature examples. Let's see the specific content.

encapsulation

Encapsulate a teacher and student class

Student class

Test class

Output results:

Name = Zhang San, age = 21, course = [Asda, yes, probably, too tempting], interest = playing name = Wang Wu, professional direction = Asda, course taught = Asda, teaching age = 99

inherit

Define play, taoistprime, master, warrior

Test class

Output results:

polymorphic

Server, client interaction

LoginListener

MyLoginListener

Server

Test class

Output results

summary

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